Quiz 30/Ago/23

The automatic service provisioning process consists of the following steps: 1. Service adaptation; 2. Service configuration; 3. Path computation; 4. Delivery and path establishment. Which of the following is the correct sequence?

• 1->2->3->4
• 2->1->3->4
• 1->2->4->3
• 2->1->4->3

Which of the following concatenation modes is used by the EoS boards of OptiX OSN series devices to form VCTRUNKs?

• Virtual concatenation
• Contiguous concatenation
• Non-contiguous concatenation
• Real concatenation

Which of the following signals has a different frame period from other signals?

• OTU2
• ODU2
• ODU2e
• OPU2

Which of the following statements about ODUk_PM_BDI is true?

• ODUk PM signal degradation
• ODUk PM section BIP8 bit error threshold crossing
• ODUk PM backward defect indication
• ODUk PM open connection indication

The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame, and a maximum of ( ) base frames are included.

• 64
• 128
• 256
• 512

Which of the following statements is correct about the encoding mode used by the optical interfaces of SDH devices?

• RZ encoding
• NRZ encoding
• NRZI encoding
• PAM4 encoding

Which of the following OTUk bit rates are correct?

• OTU1: 2.5 Gbit/s

• OTU2: 10 Gbit/s

• OTUC2: 100 Gbit/s

• OTUC4: 400 Gbit/s

• OTU3: 40 Gbit/s

Which of the following scenarios require dispersion compensation?

• In a point-to-point 80-channel 10G system, the fiber dispersion coefficient is 20 ps/(nm-km) and the distance between site A and site B is 80 km.

• In a point-to-point 40-channel 100G system, the fiber dispersion coefficient is 20 ps/(nm-km) and the distance between site A and site B is 80 km.

• In a point-to-point 40-channel 10G and 100G hybrid transmission system, the fiber dispersion coefficient is 20 ps/(nm-km) and the distance between site A and site B is 80 km.

• In a point-to-point 40-channel 10G and 2.5G hybrid transmission system, the fiber dispersion coefficient is 20 ps/(nm-km) and the distance between site A and site B is 80 km.

The erbium-doped fiber amplifier (EDFA) is a key component of the next-generation optical communication system. Which of the following are the features of the EDFA?

• High gain

• High output power

• Amplification of any wavelengths

• Low noise figure

Which of the following switching modes are supported by switches?

• Store-and-forward mode

• Cut-through mode

• Fragment-free mode

• Broadcast mode